Trilobites are often considered exemplary for understanding the Cambrian explosion of
animal life, due to their unsurpassed diversity and abundance. These biomineralized …

This chapter reviews major types of statistical resampling approaches used in paleontology.
They are an increasingly popular alternative to the classic parametric approach because …

T he theoretical literature on species and speciation has frequently been viewed as chaotic,
onerous, and unenlightening (eg, Hull 1997; Morrison 2011; Harrison 2012), but it remains …

The Henson Gletscher Formation of North Greenland yields moderately diverse trilobite
faunas which bracket the Cambrian Series 2–Series 3 boundary interval. A number of the …

Mid-Cambrian biotas of the Spence, Wheeler, Marjum, and Weeks formations in Utah are
exceptionally diverse. Continued collecting has produced additional trilobites here assigned …

Logical connections exist between evolutionary modularity and heterochrony, two unifying
and structuring themes in the expanding field of evolutionary developmental biology. The …

Species with larger geographic distributions are more likely to encounter a greater variety of
environmental conditions and barriers to gene flow than geographically-restricted species …

Although discordance between taxonomic diversity and morphological disparity is common,
little is known about the underlying dynamics that drive this decoupling. Early in the history …

Morphological variation within the Early Cambrian olenelline trilobite Olenellus gilberti from
the Pioche Formation of Nevada is partitioned into ontogenetic, static (non-ontogenetic), and …

Despite the mounting evidence that taxonomic diversity dynamics are patterned
environmentally and that taxonomic diversity and morphological disparity are decoupled …